Mythbusters antiacid co2 jailbreak gives good ideas

i watched this and i have to say, seems like there has to be a good way to store pressurized co2 from watching this so if anyone has any ideas from this video hit me up.... they made co2 from antiacid

http://dsc.discovery.com/videos/mythbusters-antacid-jailbreak/

no ideas huh.... they built up a good amount just from 4 tabs